This could be a hippy vintage wallpaper.
Source Tileable Patterns
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
This background texture resembles stone. It may be used as a background on web pages or on some of their html elements (header, borders, menu bar, etc.). Just modify it for your needs.
Source V. Hartikainen
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This one has rusty dark brown texture.
Source V. Hartikainen
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
Colorful Floral Background 3 No Black
Source GDJ
Can’t believe we don’t have this in the collection already! Slick woven pattern with crisp details.
Source Max Rudberg
The image depicts a tiled seamless pattern.The tile represents four leaves aligned every 90 ° , which may look like a bird or a dragon .The original leaf design is from a Japanese old book.
Source Yamachem
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
Adapted from an image that was uploaded to Pixabay by Anerma.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Remixed from a drawing in 'An Index to Deering's Nottinghamia Vetus et Nova', Rupert Chicken, 1899. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin